function PlotFrame(FLx ,FLy ,FRx, FRy, RLx, RLy, RRx, RRy)
plot([FLx,FRx],[FLy,FRy],'g');
hold on
plot([FLx,RLx],[FLy,RLy],'r');
hold on
plot([RLx,RRx],[RLy,RRy],'y');
hold on
plot([RRx,FRx],[RRy,FRy],'c');
end